As Theresa May gets closer to putting her Brexit deal before parliament, we discuss the chances of success. Was this really the best deal available?  What will MPs be weighing up when they get their chance to vote on it? Have its opponents missed their chance? Plus we try to make sense of the choices facing the DUP and we consider the larger question of what this version of Brexit would mean for the future of the Union. With Kenneth Armstrong, author of Brexit Time, Helen Thompson and Chris Bickerton.